Quasimolecular electronic structure of the trimer iridate Ba${}_4$NbIr${}_3$O${}_{12}$

M. Magnaterra, A. Sandberg, H. Schilling +17

The insulating mixed-valent Ir${}^{+3.66}$ compound Ba${}_4$NbIr${}_3$O${}_{12}$ hosts two holes per Ir${}_3$O${}_{12}$ trimer unit. We address the electronic structure via resonant inelastic…